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Wed, 17 Sep 2025 00:32:52 -0700 (PDT) From: Alexey Klimov Date: Wed, 17 Sep 2025 08:32:50 +0100 Subject: [PATCH v3 1/3] ALSA: compress: add raw opus codec define and opus decoder structs Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250917-opus_codec_rfc_v1-v3-1-7737ad40132e@linaro.org> References: <20250917-opus_codec_rfc_v1-v3-0-7737ad40132e@linaro.org> In-Reply-To: <20250917-opus_codec_rfc_v1-v3-0-7737ad40132e@linaro.org> To: Vinod Koul , Jaroslav Kysela , Takashi Iwai , Srinivas Kandagatla , Liam Girdwood , Mark Brown Cc: Patrick Lai , Annemarie Porter , srinivas.kandagatla@oss.qualcomm.com, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Krzysztof Kozlowski , kernel@oss.qualcomm.com, Ekansh Gupta , Alexey Klimov , Pierre-Louis Bossart X-Mailer: b4 0.14.2 Adds a raw opus codec define and raw opus decoder structs. This is for raw OPUS packets not packed in any type of container (for instance OGG container). The decoder struct fields are taken from corresponding RFC document: RFC 7845 Section 5. Cc: Srinivas Kandagatla Cc: Vinod Koul Co-developed-by: Annemarie Porter Signed-off-by: Annemarie Porter Signed-off-by: Alexey Klimov --- include/uapi/sound/compress_params.h | 43 ++++++++++++++++++++++++++++++++= +++- 1 file changed, 42 insertions(+), 1 deletion(-) diff --git a/include/uapi/sound/compress_params.h b/include/uapi/sound/comp= ress_params.h index bc7648a30746f4632ecf6695868e79550a431dfa..faf4fa911f7fc2830c3ae42b936= 50fe40d8a776b 100644 --- a/include/uapi/sound/compress_params.h +++ b/include/uapi/sound/compress_params.h @@ -43,7 +43,8 @@ #define SND_AUDIOCODEC_BESPOKE ((__u32) 0x0000000E) #define SND_AUDIOCODEC_ALAC ((__u32) 0x0000000F) #define SND_AUDIOCODEC_APE ((__u32) 0x00000010) -#define SND_AUDIOCODEC_MAX SND_AUDIOCODEC_APE +#define SND_AUDIOCODEC_OPUS_RAW ((__u32) 0x00000011) +#define SND_AUDIOCODEC_MAX SND_AUDIOCODEC_OPUS_RAW =20 /* * Profile and modes are listed with bit masks. This allows for a @@ -324,6 +325,45 @@ struct snd_dec_ape { __u32 seek_table_present; } __attribute__((packed, aligned(4))); =20 +/** + * struct snd_dec_opus - Opus decoder parameters (raw opus packets) + * @version: Usually should be '1' but can be split into major (4 upper bi= ts) + * and minor (4 lower bits) sub-fields. + * @num_channels: Number of output channels. + * @pre_skip: Number of samples to discard at 48 kHz. + * @sample_rate: Sample rate of original input. + * @output_gain: Gain to apply when decoding (in Q7.8 format). + * @mapping_family: Order and meaning of output channels. Only values 0 an= d 1 + * are expected; values 2..255 are not recommended for playback. + * + * Optional channel mapping table. Describes mapping of opus streams to de= coded + * channels. + * @struct snd_dec_opus_ch_map + * @stream_count: Number of streams encoded in each Ogg packet. + * @coupled_count: Number of streams whose decoders are used for two + * channels. + * @channel_map: describes which decoded channel to be used for each one. + * See RFC doc for details. + * This supports only mapping families 0 and 1, therefore max + * number of channels is 8. + * + * These options were extracted from RFC7845 Section 5. + */ + +struct snd_dec_opus { + __u8 version; + __u8 num_channels; + __u16 pre_skip; + __u32 sample_rate; + __u16 output_gain; + __u8 mapping_family; + struct snd_dec_opus_ch_map { + __u8 stream_count; + __u8 coupled_count; + __u8 channel_map[8]; + } chan_map; +} __attribute__((packed, aligned(4))); + union snd_codec_options { struct snd_enc_wma wma; struct snd_enc_vorbis vorbis; @@ -334,6 +374,7 @@ union snd_codec_options { struct snd_dec_wma wma_d; struct snd_dec_alac alac_d; struct snd_dec_ape ape_d; 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Wed, 17 Sep 2025 00:32:53 -0700 (PDT) From: Alexey Klimov Date: Wed, 17 Sep 2025 08:32:51 +0100 Subject: [PATCH v3 2/3] ALSA: compress_offload: increase SNDRV_COMPRESS_VERSION minor version by 1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250917-opus_codec_rfc_v1-v3-2-7737ad40132e@linaro.org> References: <20250917-opus_codec_rfc_v1-v3-0-7737ad40132e@linaro.org> In-Reply-To: <20250917-opus_codec_rfc_v1-v3-0-7737ad40132e@linaro.org> To: Vinod Koul , Jaroslav Kysela , Takashi Iwai , Srinivas Kandagatla , Liam Girdwood , Mark Brown Cc: Patrick Lai , Annemarie Porter , srinivas.kandagatla@oss.qualcomm.com, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Krzysztof Kozlowski , kernel@oss.qualcomm.com, Ekansh Gupta , Alexey Klimov , Pierre-Louis Bossart X-Mailer: b4 0.14.2 Since addition of raw opus codec support we need to update compress API minor version by one. Bump the SNDRV_COMPRESS_VERSION to 0.4.1. Signed-off-by: Alexey Klimov Acked-by: Vinod Koul --- include/uapi/sound/compress_offload.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/uapi/sound/compress_offload.h b/include/uapi/sound/com= press_offload.h index 26f756cc2e6215fe99bbac4f4a32ceb475068ec4..b610683fd8dbe4cb60489874fe9= 4aca167ac7abb 100644 --- a/include/uapi/sound/compress_offload.h +++ b/include/uapi/sound/compress_offload.h @@ -13,7 +13,7 @@ #include #include =20 -#define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 4, 0) +#define SNDRV_COMPRESS_VERSION SNDRV_PROTOCOL_VERSION(0, 4, 1) /** * struct snd_compressed_buffer - compressed buffer * @fragment_size: size of buffer fragment in bytes --=20 2.47.3 From nobody Thu Oct 2 11:49:11 2025 Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4B4AF302769 for ; 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Wed, 17 Sep 2025 00:32:55 -0700 (PDT) Received: from orion.home ([2a02:c7c:7259:a00:75ac:2ea2:dfdc:89c7]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4613eb27f25sm25442035e9.23.2025.09.17.00.32.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Sep 2025 00:32:55 -0700 (PDT) From: Alexey Klimov Date: Wed, 17 Sep 2025 08:32:52 +0100 Subject: [PATCH v3 3/3] ASoC: qcom: qdsp6/audioreach: add support for offloading raw opus playback Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250917-opus_codec_rfc_v1-v3-3-7737ad40132e@linaro.org> References: <20250917-opus_codec_rfc_v1-v3-0-7737ad40132e@linaro.org> In-Reply-To: <20250917-opus_codec_rfc_v1-v3-0-7737ad40132e@linaro.org> To: Vinod Koul , Jaroslav Kysela , Takashi Iwai , Srinivas Kandagatla , Liam Girdwood , Mark Brown Cc: Patrick Lai , Annemarie Porter , srinivas.kandagatla@oss.qualcomm.com, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Krzysztof Kozlowski , kernel@oss.qualcomm.com, Ekansh Gupta , Alexey Klimov , Pierre-Louis Bossart X-Mailer: b4 0.14.2 Add support for OPUS module, OPUS format ID, media format payload struct and make it all recognizable by audioreach compress playback path. At this moment this only supports raw or plain OPUS packets not encapsulated in container (for instance OGG container). For this usecase each OPUS packet needs to be prepended with 4-bytes long length field which is expected to be done by userspace applications. This is Qualcomm DSP specific requirement. Cc: Annemarie Porter Cc: Vinod Koul Co-developed-by: Srinivas Kandagatla Signed-off-by: Srinivas Kandagatla Signed-off-by: Alexey Klimov Acked-by: Mark Brown --- sound/soc/qcom/qdsp6/audioreach.c | 27 +++++++++++++++++++++++++++ sound/soc/qcom/qdsp6/audioreach.h | 17 +++++++++++++++++ sound/soc/qcom/qdsp6/q6apm-dai.c | 3 ++- sound/soc/qcom/qdsp6/q6apm.c | 3 +++ 4 files changed, 49 insertions(+), 1 deletion(-) diff --git a/sound/soc/qcom/qdsp6/audioreach.c b/sound/soc/qcom/qdsp6/audio= reach.c index bbfd51db879766445fa0fea564659fabd06b59ad..7e9c48ad0b88213fd39eab222c1= 04a8e41c583da 100644 --- a/sound/soc/qcom/qdsp6/audioreach.c +++ b/sound/soc/qcom/qdsp6/audioreach.c @@ -883,6 +883,7 @@ static int audioreach_set_compr_media_format(struct med= ia_format *media_fmt_hdr, struct payload_media_fmt_aac_t *aac_cfg; struct payload_media_fmt_pcm *mp3_cfg; struct payload_media_fmt_flac_t *flac_cfg; + struct payload_media_fmt_opus_t *opus_cfg; =20 switch (mcfg->fmt) { case SND_AUDIOCODEC_MP3: @@ -925,6 +926,32 @@ static int audioreach_set_compr_media_format(struct me= dia_format *media_fmt_hdr, flac_cfg->min_frame_size =3D mcfg->codec.options.flac_d.min_frame_size; flac_cfg->max_frame_size =3D mcfg->codec.options.flac_d.max_frame_size; break; + case SND_AUDIOCODEC_OPUS_RAW: + media_fmt_hdr->data_format =3D DATA_FORMAT_RAW_COMPRESSED; + media_fmt_hdr->fmt_id =3D MEDIA_FMT_ID_OPUS; + media_fmt_hdr->payload_size =3D sizeof(*opus_cfg); + p =3D p + sizeof(*media_fmt_hdr); + opus_cfg =3D p; + /* raw opus packets prepended with 4 bytes of length */ + opus_cfg->bitstream_format =3D 1; + /* + * payload_type: + * 0 -- read metadata from opus stream; + * 1 -- metadata is provided by filling in the struct here. + */ + opus_cfg->payload_type =3D 1; + opus_cfg->version =3D mcfg->codec.options.opus_d.version; + opus_cfg->num_channels =3D mcfg->codec.options.opus_d.num_channels; + opus_cfg->pre_skip =3D mcfg->codec.options.opus_d.pre_skip; + opus_cfg->sample_rate =3D mcfg->codec.options.opus_d.sample_rate; + opus_cfg->output_gain =3D mcfg->codec.options.opus_d.output_gain; + opus_cfg->mapping_family =3D mcfg->codec.options.opus_d.mapping_family; + opus_cfg->stream_count =3D mcfg->codec.options.opus_d.chan_map.stream_co= unt; + opus_cfg->coupled_count =3D mcfg->codec.options.opus_d.chan_map.coupled_= count; + memcpy(opus_cfg->channel_mapping, mcfg->codec.options.opus_d.chan_map.ch= annel_map, + sizeof(opus_cfg->channel_mapping)); + opus_cfg->reserved[0] =3D opus_cfg->reserved[1] =3D opus_cfg->reserved[2= ] =3D 0; + break; default: return -EINVAL; } diff --git a/sound/soc/qcom/qdsp6/audioreach.h b/sound/soc/qcom/qdsp6/audio= reach.h index 790fba96e34db0fc9d5c90504747174f56b65b32..d1b60b36468a86301601b61a7f8= e7f6051561c3e 100644 --- a/sound/soc/qcom/qdsp6/audioreach.h +++ b/sound/soc/qcom/qdsp6/audioreach.h @@ -31,6 +31,7 @@ struct q6apm_graph; #define MODULE_ID_MP3_DECODE 0x0700103B #define MODULE_ID_GAPLESS 0x0700104D #define MODULE_ID_DISPLAY_PORT_SINK 0x07001069 +#define MODULE_ID_OPUS_DEC 0x07001174 =20 #define APM_CMD_GET_SPF_STATE 0x01001021 #define APM_CMD_RSP_GET_SPF_STATE 0x02001007 @@ -257,6 +258,22 @@ struct payload_media_fmt_aac_t { uint32_t sample_rate; } __packed; =20 +#define MEDIA_FMT_ID_OPUS 0x09001039 +struct payload_media_fmt_opus_t { + uint16_t bitstream_format; + uint16_t payload_type; + uint8_t version; + uint8_t num_channels; + uint16_t pre_skip; + uint32_t sample_rate; + uint16_t output_gain; + uint8_t mapping_family; + uint8_t stream_count; + uint8_t coupled_count; + uint8_t channel_mapping[8]; + uint8_t reserved[3]; +} __packed; + #define DATA_CMD_WR_SH_MEM_EP_EOS 0x04001002 #define WR_SH_MEM_EP_EOS_POLICY_LAST 1 #define WR_SH_MEM_EP_EOS_POLICY_EACH 2 diff --git a/sound/soc/qcom/qdsp6/q6apm-dai.c b/sound/soc/qcom/qdsp6/q6apm-= dai.c index 09da26f712a6ada97196090d760b91bc2dc2a732..4ecaff45c51860cddc631725953= ba7dfa84eeb50 100644 --- a/sound/soc/qcom/qdsp6/q6apm-dai.c +++ b/sound/soc/qcom/qdsp6/q6apm-dai.c @@ -551,10 +551,11 @@ static int q6apm_dai_compr_get_caps(struct snd_soc_co= mponent *component, caps->max_fragment_size =3D COMPR_PLAYBACK_MAX_FRAGMENT_SIZE; caps->min_fragments =3D COMPR_PLAYBACK_MIN_NUM_FRAGMENTS; caps->max_fragments =3D COMPR_PLAYBACK_MAX_NUM_FRAGMENTS; - caps->num_codecs =3D 3; + caps->num_codecs =3D 4; caps->codecs[0] =3D SND_AUDIOCODEC_MP3; caps->codecs[1] =3D SND_AUDIOCODEC_AAC; caps->codecs[2] =3D SND_AUDIOCODEC_FLAC; + caps->codecs[3] =3D SND_AUDIOCODEC_OPUS_RAW; =20 return 0; } diff --git a/sound/soc/qcom/qdsp6/q6apm.c b/sound/soc/qcom/qdsp6/q6apm.c index b4ffa0f0b188e2c32fdfb863b9130d1d11e578dd..0e667a7eb5467bdd65326099132= e8ba9dfefa21e 100644 --- a/sound/soc/qcom/qdsp6/q6apm.c +++ b/sound/soc/qcom/qdsp6/q6apm.c @@ -354,6 +354,9 @@ int q6apm_set_real_module_id(struct device *dev, struct= q6apm_graph *graph, case SND_AUDIOCODEC_FLAC: module_id =3D MODULE_ID_FLAC_DEC; break; + case SND_AUDIOCODEC_OPUS_RAW: + module_id =3D MODULE_ID_OPUS_DEC; + break; default: return -EINVAL; } --=20 2.47.3